Thermoset elastomers are widely used in industry and frontier research due to their advantage of mechanical robustness, high thermal/chemical resistance, and good dimensional stability. However, the presence of permanent crosslinks in thermoset elastomers significantly limits their recyclability. Polymer networks with associative exchangeable crosslinkers, called vitrimers, are reported to provide a path to polymer circularity for traditional thermosets. Herein, we provide a review of representative studies dedicated to the design, synthesis, fundamental physics, and property evaluation of elastic vitrimers that are synthesized based on different types of dynamic covalent bonds. Control on the network parameters (e.g., type of chemical bond, crosslink density, polymer backbone, and network architecture) of the elastic vitrimers enables them to tailor their mechanical performance, network dynamics, self-healing capability, and recyclability. The dynamic nature of reversible chemical bonds allows controlling the responsive behavior of elastic vitrimers to a variety of external stimuli, such as temperature, light, and moisture. Special attention is paid to the critical physical parameters in elastic vitrimers, such as topology freezing temperature (T_v), and their comparison with those of widely used thermoset and thermoplastic elastomers. The merits, bottlenecks, and future research directions of elastic vitrimers are also discussed toward their practical applications in various fields.

热固性弹性体因其机械强度高、耐热/耐化学性高和良好的尺寸稳定性等优点而广泛用于工业和前沿研究。然而，热固性弹性体中永久交联的存在显着限制了它们的可回收性。据报道，具有缔合可交换交联剂（称为玻璃体）的聚合物网络为传统热固性材料提供了聚合物循环的途径。在此，我们回顾了专门针对基于不同类型的动态共价键合成的弹性玻璃体的设计、合成、基础物理和性能评估的代表性研究。控制网络参数（例如，化学键的类型、交联密度、聚合物主链、和网络架构）的弹性玻璃体使他们能够定制其机械性能、网络动力学、自愈能力和可回收性。可逆化学键的动态特性允许控制弹性玻璃体对各种外部刺激（例如温度、光和湿度）的响应行为。特别注意弹性玻璃体中的关键物理参数，例如拓扑冷冻温度（T _v )，以及它们与广泛使用的热固性和热塑性弹性体的比较。还讨论了弹性玻璃体的优点、瓶颈和未来的研究方向，并针对其在各个领域的实际应用进行了讨论。